Daniel brennan



(No Model.) I

1). BRENNAN, Jr.

MOVABLE JAW FOR STONE AND ORB GRUSHEBS.

N0. 281,829. Patented July 24, 1883.

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ATTORNEY S.-

N. PETERS, PholoLilhognpher, Washmgmn, n. c.

UNITED STATES PATENT ()FFIQE.

DANIEL BRENNAN, Jnfor ORANGE, NEW JERSEY.

MOVABLE JAW FOR STQNE AND ORE CRUSHERS.

SPECIFICATION forming part of Letters Patent No. 281,829, dated July 24, 1883.

Application filed October 18, 1882.

To all whom it may concern Be it known that I, DANIEL BRENNAN, Jr., of Orange, in the county of Essex and State of New Jersey, have invented a new and useful Improvement in Movable Jaws for Stone and Ore Crushers, of which the following is a full, clear, and exact description.

Reference is to be hadto the accompanying drawings, forming a part of this specification, in which similarletters of reference indicate corresponding parts in both the figures.

Figure 1 is a sectional side elevation of my improvement. Fig. 2 is a plan view of the same, the rear part of the movable jaw and its rod and spring being removed, and the forward part of the said jaw being shown in section through the line w 00, Fig. 1.

The object of this invention is to provide movable jaws for stone and ore crushers, constructed in such a manner that the movement of the lower part of the jaw will be adjustable independently of the movement of the upper part of the said jaw. The invention consists in the movable jaw of a stone and ore crusher, made in two parts, hinged to each other near their upper ends, and providedwith a mechanism to regulate the rearward movement of the lower end of the said jaw. The adjustable forward part of the movable jaw is made with a slot and transverse perforation at each end, to adapt the said part to be turned and reversed as it becomes worn. The main rear part of the movable jaw is made witha recess near its hinged upper end, to receive the upper end of the forward part of the said jaw and sustain the upward thrust of the said forward part. The upper end of the forward part of the movable jaw is hinged to the rear part, near its upper end, by a pin and clevis or other hinging connection, and their lower ends are drawn back after each stroke by two rods and two springs, so that the said lower ends will be drawn back independently of each other. The rearward movement of the lower end of the forward part of the jaw is regulated by two eccentrics attached to a shaft and operated by a worm-wheel and worm, as will be hereinafter fully described.

A represents the frame, and B the stationary jaw, of an ordinary stone and ore crusher. The movable jaw of the crusher is made in two parts, 0 D, the rear part, D, of which is hinged (No model.)

at its upper end to the upper part of the frame A by a pin, E. The upper end of the part D of the jaw that receives the hingingpin E proj ects forward, and is recessed upon the lower side, to receive the rounded upper end of the forward part, 0, of the said jaw, so that the upward thrust of the said part 0 will be in the direction of and sustained by the pin E. The upper end of the part 0 of the jaw has a slot, F, formed in it, and is perforated transversely to receive the pin G, which also passes through the bend of the clevis or U-bolt H, the arms of which pass through a perforation in the part D of the jaw a little below the pin E, and have washers and nuts I upon their ends, so that. the upper end of the part G of the jaw will be hinged to the upper portion of the part D of the said jaw. This connection can be made by an eye-bar and key or other suitable hinging connection. The lower end of the part 0 is slotted in the same manner as its upper end, so that the said jaw can be turned end for end as it becomes worn, and its front and rear sides are made alike, so that it can be reversed, whereby the said part can be used much longer than it could be if the wear had to be always received in the same place.

The movable jaw O D can be pushed forward to make a stroke by a togglebar, J, or any of the ordinary means for operating the movable jaw of a crusher, which means need not be herein shown and described, as they are well known, and as there is nothing new in their construction or operation.

The parts 0 D of the movable jaw are drawn back independently, after making a stroke, by the rods K K, which pass through bars L L, secured to or formed upon the frame A, and have rubber or other suitable springs, M M, placed upon them at the rear sides'of the bars L L, and have washers and nuts N N upon their ends, at the rear ends of the springs M M; The forward end of the rod K is inserted in the slot F at the lower end of the part 0 of the jaw, and is secured in place by a pin, 0, passed through the perforation in the said end. The forward end of the rod K is secured to the rear side of the lower end of the partD by an eyebolt or staple, l attached to the said )art. I

1 The rear side of the lower end of the forwardpart, G, of the j aw rests against the faces of has a worm-wheel, S, attached to one end.-

two eccentrics, Q, attached to the shaft R, which works in hearings in the frame A, and

With the worm-wheel S engages the worm T, formed upon or attached to the shaft .U, which works in bearings V, attached to the frame A, and has a hand-wheel, WV, attached to its rear end, so that by operating the worm T and worm-wheel S the eccentrics Q can be adjusted to limit the rearward movement of the lower end of the part 0 of the jaw, and thus regulate the size of the discharge-opening between the stationary and movable jaws and secure a uniformity in the size of the crushed material.

It will be observed that the limiting of the rearward movement of the lower end of the forward part, 0, of the jaw does not affect the rearward movement of the lower end of the rear part, D, of the said jaw, or the rearward movement of the upper ends of the two parts, so that the said upper ends of the two parts will have a sufficient movement to crush the large pieces as they enter the machine.

It will also be observed that by turning the eccentrics Q to bring their shortest radii toward the part 0 the said part 0 will rest squarely against the part D, and the lower ends of the two parts will have exactly the same movement as if the two parts formed a solid jaw.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In astone and ore crusher, the combination, with the parts 0 D of the movable jaw, hinged together, of mechanism for regulating the rearward movement of the lower end of the forward part of the said jaw, substantially as herein shown and described.

2. In a stone and ore crusher, the forward part, 0, of the movable jaw, made, substantially as herein shown and described, with a slot and transverse perforation in each end,

to adapt the said part to be turned and reversed as it becomes worn, as set forth.

3. In a stone and ore crusher, the combina tion, with the rear part, D, of the movable jaw provided with a projection having its lower side recessed, of the forward part, 0, of said movable jaw, hinged to thesaid rear part under its projection, substantially as and for the purpose set forth.

4. In a stone and ore crusher, the combination, with the hinged and perforated upper end of the rear part, D, of the movable jaw, and the slotted and perforated upper end of the forward part, G, of the said jaw, of the pin G and the clevis H, substantially as here in shown and described, whereby the said upper ends are hinged to each other, as set forth.

5. In a stone and ore crusher, the combina tion, with the parts 0 D of the movable jaw, hinged together, of the rods K K, the springs M M, and bars L L, substantially as shown and'described, whereby the lower ends of the two parts of the said movable jaw will be drawn back independently, as set forth.

6. In a stone and ore crusher, the combination, with the lower end of the forward part, 0, of the movable jaw, of the eccentrics Q, the shaft R, and an operating mechanism, substantially as herein sh own and described, whereby the rearward movement of the said lower end can be regulated, as set forth.

7. In a stone and ore crusher, the combina tion, with the shaft R, carrying the eccentrics Q, of the worm-wheel S and the worm T, substantially as herein shown and described, whereby the said eccentrics can be readily ad justed to regulate the rearward movement of the lower end of the forward part of the movable jaw, as set forth.

DANIEL BRENNAN, J R.

'VVitnesses:

JAMES T. GRAHAM, O. SEDGWIOK. 

